the driver was taken to john muir medical center. he is deceased. >> the witness told his boss the gunman was buckled in his seatbelt. this started with a traffic stop on 680 south. the aftermath is captured on radio communications between the dispatcher and a responding officer. >> nobody else is 1097 yet. >> 10-4. the the description of the subject, suspect or anything like that. >> negative. he just said officer was down. have i been trying to call and no response. >> i-680 was closed for much of the day leading to massive eek as police turnedaround the freeway into a temporary crime lab. one of the unanswered questions is why one of the chp cars was in front of the suspect's jeep and not behind the vehicle they stop. >> that's something we are taking a close look at. i will not address exactly the procedures a the this time. >> police have not said why the officer pulled over that car in the first place. at his home base the officers have been keeping a vigil. in martinez, abc7 news. >> john, thank you. police are not releasing t